431688056 has 32 divisors (see below), whose sum is σ = 853200000. Its totient is φ = 204199776.

The previous prime is 431688043. The next prime is 431688067. The reversal of 431688056 is 650886134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142445 + ... + 145443.

It is an arithmetic number, because the mean of its divisors is an integer number (26662500).

Almost surely, 2^431688056 is an apocalyptic number.

431688056 is the 11996-th octagonal number.

It is an amenable number.

431688056 is a deficient number, since it is larger than the sum of its proper divisors (421511944).

431688056 is a wasteful number, since it uses less digits than its factorization.

431688056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971 (or 3967 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 431688056 is about 20777.1041293054. The cubic root of 431688056 is about 755.7706301915.

The spelling of 431688056 in words is "four hundred thirty-one million, six hundred eighty-eight thousand, fifty-six".